The move could pave the way for the Pistons to part with guard Kentavious Caldwell-Pope, a restricted free agent who is due a huge payday. Don't get me wrong I love KCP, but he wasn't worth the max.
Ultimately, for a team that needed to shed salary, picking up a useful player and losing a soon-to-be-expensive one is not a bad move.
Now that the KCP era is done let's see what Avery Bradley brings to the table. If he doesn't take a lot of preparation to get up to the National Basketball Association speed, then this could be a really good Celtics team. There will be many teams willing to throw big money at a player who can shut down Kyrie Irving and limit Stephen Curry. You could just call him an upgrade of KCP. "Avery did a lot of the dirty work and often didn't get the recognition that he deserved, but our coaches, staff, his teammates, and our fans who watched him play every night appreciated what a special player and person he is".
The Celtics are weaker on the perimeter, though Marcus Smart can handle some of Bradley's defensive responsibilities. Morris will likely fill a void left in the frontcourt by Kelly Olynyk's departure to the Heat via free agency, as it left the Celtics rather light on reliable power forward depth. He recorded 16.3 points, 6.1 rebounds, 2.2 assists and 1.2 steals per game last season, adding his best performance yet from 3-point range with a career-high two makes a night at a 39 percent rate (he shot a career-high 46.3 percent overall, too).
According to ESPN's Ramona Shelburne and Adrian Wojnarowski, the Celtics have been "aggressively" shopping a few of their pieces, including Bradley, Marcus Smart and Jae Crowder, in an effort to create more cap space as a result of the Gordon Hayward deal. The Pistons also will be getting a future second-round draft pick in the deal.
One of the best two-way players in the league is headed to the Detroit Pistons. Next off-season they have Bird rights and they can offer him max if they're willing to do so.